LiftMaster Sprocket Kit (1.25" Bore, 1/4" Key) | LIF-71-1550B22QGH Doorking Octagonal Arm Edges and Bumper 3 Position Switch: On/off/blinker-uses 2

3 Position Switch: On/off/blinker-uses 2 D Cell Batteries (not Included)

Adaptive Sensing - High-resolution detection curtains create a reliable solution with the ability to self-adapt as the door opens

LiftMaster 41D1624-1

Doorking 1 Channel Plug In Loop Detector | DKS-9410-010

Some failsafe applications may require a 3 or 4 wire cord

LiftMaster Sprocket Kit (1.25" Bore, 1/4" Key) | LIF-71-1550B22QGH Doorking Octagonal Arm Edges and Bumper 3 Position Switch: On/off/blinker-uses 2LiftMaster Sprocket Kit (1. 25" Bore, 1 4" Key) LIF 71 1550B22QGH SPROCKET KIT, 22 TOOTH, 1. 25"BX1 4" K. Recommended for 1200 Operators for Sectional Doors.